We are a Surefire OEM shop, so we buy alot of Surefire and use in rifles and upper receivers we build. As such, we sell a lot of Surefire suppressors. We also sell great suppressors from Barrett, Energetic Armament, Dead Air, Rex, TBAC, etc. We also sell a fair number of bolt action Cadex rifles and chassis, and many in .50 cal.
I mention this as a qualification to my next comment. We do not sell many .50 cal Surefire cans. The ones we have sold and shot have been outstanding. Until the recent bankruptcy of Remington Outdoors, our .50 cal cans have been AAC and Barrett. Then again, many of the .50 cal ELR shooters are not shooting suppressed.
I would be more than happy to help you choose, or to quote you on Barrett and Surefire. I am also curious what you are shooting.